U.S. Geological Survey
20200507
USGS Lidar Point Cloud PR PRVI F 2018 19QGA32507350
map
Reston, VA
U.S. Geological Survey
https://nationalmap.gov/3DEP/
http://nationalmap.gov/viewer.html
Lidar (Light detection and ranging) discrete-return point cloud data are available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS format. The LAS format is a standardized binary format for storing 3-dimensional point cloud data and point attributes along with header information and variable length records specific to the data. Millions of data points are stored as a 3-dimensional data cloud as a series of x (longitude), y (latitude) and z (elevation) points. A few older projects in this collection are in ASCII format. Please refer to http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html for additional information. This data set is a LAZ (compressed LAS) format file containing lidar point cloud data. Compression to an LAZ file was done with the LAStools 'laszip' program and can be unzipped with the same free program (laszip.org).
High-resolution digital elevation maps generated by airborne and stationary LiDAR have led to significant advances in geomorphology, the branch of geoscience concerned with the origin and evolution of Earth's surface topography. LiDAR provides unique characteristics relative to other remotely sensed data sources by providing three-dimensional feature information that cannot be derived from traditional imaging sensors.
20180417
20190419
publication date
None planned
-67.0725571893372
-67.05830394109425
18.509930120342283
18.496331755604782
ISO 19115 Topic Category
elevation
NGDA Portfolio Themes
Elevation
National Elevation Dataset (NED)
National Elevation Dataset
NED
Elevation
LIght Detection And Ranging
LIDAR
High Resolution
Topographic Surface
Topography
Terrain Elevation
Cartography
DEM
Digital Elevation Model
Digital Mapping
Digital Terrain Model
Geodata
GIS
Mapping
USGS
U.S. Geological Survey
3DEP
Geographic Names Information System
US
United States
The National Map Place Thesaurus
US
None. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the USGS Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and USGS interests.
There is no guarantee or warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since these data were collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the USGS. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/LPC/Projects/USGS_LPC_PR_PRVI_F_2018/browse/USGS_LPC_PR_PRVI_F_2018_19QGA32507350.jpg
Thumbnail JPG image
JPEG
Acknowledgement of the originating agencies would be appreciated in products derived from these data.
Data are provided in las format version LAS 1.4. Header attributes and point attribute for LAS files can be found on ASPRS website listed below. USGS not making any promises on the accuracy or completeness of the attribute information.
Please refer to the Metadata Section at the end of this document for a live link to a copy of the original data source's metadata file if one was provided.
The lidar collection has been acquired by the USGS through contracts, partnerships with other Federal, state, tribal, or regional agencies, from direct purchases from private industry vendors, and through volunteer contributions from the science community. While USGS makes every effort to provide accurate and complete information, USGS provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished lidar point clouds. Please note that USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.
unknown
2019
Unknown
U.S. Geological Survey
mailing and physical
USGS National Geospatial Program Office
12201 Sunrise Valley Drive
Reston
VA
20192
USA
1-888-ASK-USGS (1-888-275-8747)
0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)
Please visit http://www.usgs.gov/ask/ to contact us.
Point
NAD83(2011) / Puerto Rico and Virgin Is.
18.43333333333333
18.03333333333333
0.0
17.83333333333333
200000.0
200000.0
coordinate pair
N/A
The attributes for LAS is described in LAS specifications.
A link to the LAS specifications describing information that is included for the LAS file and each point record it contains is provided at the end of the Metadata Section of this document.
Unknown
U.S. Geological Survey
mailing and physical
USGS National Geospatial Program Office
12201 Sunrise Valley Drive
Reston
VA
20192
USA
1-888-ASK-USGS (1-888-275-8747)
Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA
Please visit http://www.usgs.gov/ask/ to contact us.
Downloadable Data
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty, expressed or implied, is made by either regarding the utility of the data on any system, nor shall the act of distribution constitute any such warranty. The USGS will warranty the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site.
LAZ
428.580717
ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_PR_PRVI_F_2018/laz/USGS_LPC_PR_PRVI_F_2018_19QGA32507350.laz
NONE
20200507
Unknown
U.S. Geological Survey
mailing and physical
USGS National Geospatial Program Office
12201 Sunrise Valley Drive
Reston
VA
20192
USA
1-888-ASK-USGS (1-888-275-8747)
Monday through Friday 8:00 AM to 4:00 PM Eastern Time Zone USA
Please visit http://www.usgs.gov/ask/ to contact us.
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
http://www.asprs.org/Committee-General/LASer-LAS-File-Format-Exchange-Activities.html
ASPRS LAS specifications
ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/USGS_LPC_PR_PRVI_F_2018/metadata/USGS_LPC_PR_PRVI_F_2018.zip
Lidar Point Cloud (LPC) Metadata